Improvement in centrifugal hydro-ejectors



.H. W. & R. LAFFERTY.

Sugar Machin;

Patented April 21, 1868.

' i/z &e 72 507738:

hzaz m Jeg,

N. PETERS, PNOm-LITHOGRAPHER. WASHINGTO v D Q i NITED STATES P TENT Urrrcn.

IMPROVEMENT IN CENTRIFUGAL HYDRO'EJ'ECTORS.

Specification forming part of Letters Patent No. $7.054, dated April '21, 186?.

10 all whom it may concern:

Be it known that we, HUGH W. LAFFERTY and ROBERT LAFFERTY, both of the city of Gloucester, in the State of New Jersey, have invented a new and useful Improvement in Centrifugal Hydro-Ejectors; and we do hereby declare that the following is a full andexact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is a sectional elevation of our machine. Fig. 2 is an elevation view of the suspension device of the same; Fig. 3, a plan view of Fig. 2; Fig. 4, a sectional elevation of a second shape to be given to hollow shaft HS when desired; Fig. 5, an enlarged scale elevation view of the hollow shaft as fastened to the solid one.

The nature of our invention consists in a peculiarly-constructed suspending device, by means of which we suspend our machine, and which gives a very easy joint, while some of its parts allow to strengthen the shaft and thereby obviate the inconveniences of the vibratory motion.

To enable others skilled in the art to make and use our invention, we will now proceed to describe its construction and operation.

A is the timber, from which the machine hangs.

S is the suspending-shaft, made of one solid piece of metal from end to end.

SL is a sleeve, made of steel, into which top end of S fits tight, the sleeve secured to it by means of a screw, key, or any other suitable means.

0 is an oil-cup provided with a collar, Cd, and is set on sleeve SL on shaft S. Cd rests on a hollow shaft, HS, into which shaft S its steel sleeve SL and oil-cup O are inserted, as shown in Fig. 1. The length of HS is a little over the fourth, or about of the length of shaft S. The top end of HS has a collar, 0 d, for purposes hereinafter shown. The lower end of HS bears inside a circular conical inverted lug, 00, Figs. 1 and 5, enlarged scale, and on its outside a thread is cut into HS.

HN is a hollow nut, which will be screwed into said thread; but before screwing HN on HS we drop into it a hollow metallic cone, I

Co, which, when HN be screwed upon thread on HS, will fittight on lug O0, and itis obvious the tighter we screw HN the tighter C0 and U0 will fit into each other. By this means the lower end of HS is therefore well secured to shaft HS, for the purpose herein after shown.

ID is a circular piece of india-rulober, gutta-percha, or like elastic material, fitting around HS. the collar CL of HS rests.

B and B are the bearing-box, into which the sundry parts of the above-described device are firmlyheld together. Said bearings are made into two separate pieces, B and B. B has a circular recess, into which ID fits, said recess being continued into part D. Braces Btl, cast solid with B, secure said piece B to the timber.

ribs cast solid with Bd to strengthen said braces.

C is a wasteoil cup set 011 shaft S, put under-HN, a small space being allowed between top of C and lower face of HN.

E is the external casing of drum.

D is the drum, secured to shafts S by means of boss 00, on which it rests, and nut N.

B is a sliding up and down brake, acted upon by lever LB in the usual way.

SB is the boss on S, unto which B acts. Lastly, a pulley, 1?, having its center in the same horizontal plane of the center of indiarubber, ID, is set on head of shaft S, its spokes being so shaped as to clear all parts of the joint suspension above described.

I? is secured to S by means of a screw or a key, so as to be easily secured at any height or removed.

The belt of any power on hand will be set on P, and give motion to our machine.

Fig. 4 shows the shape we would give the top end of our hollow shaft if we found desirable, in practice, to have the india-rubber inside instead of outside of the said hollow shaft.

Our machine is nothing more than a centrifugal ejector, and as the principle and the general points and operations of such machines is known to all of the trade we will not describe its operation.

Ve will not either enter into any minutial description of the advantages derived from suspending such machines from frames or ceilings, or cross-beams, &c., by means of flexible or elastic joints, 85c, as this mode was known long ago in England as well as in this country,

It is on the top of said ID that The whole machine hangs firm by means of bolts b Z) and b 1), RB being a patent having been taken in England in 1851 011 this very mode of suspension,) and is therefore no longer patentable as a novelty. But we will now explain the advantages of our peculiarlyconstructed suspension-joint. Our

shaft S is, as aforesaid, made of one solid piece of metal from end to end; but we strengthen it and obviate the inconveniences of vibration by means of hollow shaft HS, which can be made longer or shorter at will. Cup 0 not only insures a perfect and constant lubrication, while waste-oil cup 0 gathers all the drippings of said oil, but its 0 neck fitting onto sleeve SL gives compactness to the whole c0nstrnction. Sleeve SL prevents the wear of friction of the shaft with the neck of G.

Instead of being suspended from the under face of timber A, as is always the case with other j oi lit-suspenders, our machine, by means of braces Bd, 'which can be made of a length to suit, hangs from any distance on the side face of the timber, a very handy mode, which permits to set the machine in the best position to suit the peculiar construction of the shop it is to be worked in.

The circular bearing-boxes, by means of which the pieces of our device are held together, is also a great improvement on other joint-suspenders, as they (our boxes BB) will allow the operator to give the joint a greater or lesser degree of stiffness by simply screwing more or less bolts 6 and b.

The peculiar mode of fastening H S to S without interfering at all with the rotary movements of which it, however, checks the vibrations, is not the less important of our improvements.

In some centrifugal ej ectors the shaft is made hollow for its full length, or nearly so, and

inside is then inserted a long spindle of a lesser diameter. Now, the vibration on so light a spindle,which nothing strengthens, and which, however, bears the full strain of the rotary motion of the machine, is very great, and would in a short time render the machine worthless. Our solid shaft S and its strengthening hollow shaft HS obviate those objectionable disadvantages.

Having thus described our invention, what we claim, and desire to secure by Letters Patent of the United States, is-- 1. The combination of oil-cup C, sleeve S L, hollow shaft HS, and indiarubber piece ID, with the shaft S of a centrifugal ejector, the whole constructed and operated in the manner and for the purpose above set forth and described.

2. The combination of inverted conical lugs, with hollow cone 0'0, and nut HN, with shaft S, in the mannerand for the purpose above set forth and described.

3. The combination of bearing-boxes B and B, and their braces Bel, ribs RB, and bolts 1) b and b b, with india-rubber ID, hollow shaft HS, oil'cup C, sleeve SL, and shaft S, the whole constructed and operated in the manner and for the purpose above set forth and described.

4. The combination of waste-oil cup 0 with the shaft of a centrifugal ejector, in the manner and for the purpose above set forth and described.

HUGH W. LAFFERTY. ROBERT LAFFEBTY.

Witnesses:

SAMUEL D. MULFORD, \V. (l. MULFoRD. 

